Push-ups can be a normal phenomenon, or it can be caused by joint lesions. 1. Normal phenomenon: Push-up bone ringing may be a normal phenomenon, because when doing push-ups, the joints are loaded with weight and the muscles are contracted, resulting in the joints hitting each other or squeezing friction, at this time it is easy to emit a low ringing sound, which is manifested as push-up bone ringing. 2. Joint lesions: Push-ups can be caused by joint lesions or wear and tear, and soft tissue damage around the joints. These may cause the bones to rattle when doing push-ups, accompanied by a slight pain. This should be treated promptly to avoid aggravation of the condition. It is advisable to go to the hospital for a professional diagnosis and further treatment when push-ups rattle the bones.